1911-12.] The Elastic Strength of Flat Plates. 
387 
Table III. — Planished Steel Plates (Circular) — Permanent Set. 
Tlie micrometer readings and permanent set measurements are taken after the load 
has been applied, and then reduced to the first (and lowest) value shown — load zero for 
Plates H, J, K ; load 10 for Plate I. 
Plate. 
Load. 
Micrometer 
reading. 
Permanent 
set. 
Plate. 
Load. 
Micrometer 
reading. 
Permanent 
set. 
H 
0 
•273 
0 
I 
10 
•1525 
0 
d = 6 
10 
•273 
0 
d = 6 
20 
T525 
0 
£ = •065 
20 
•273 
0 
£ = •066 
30 
•1515 
•001 
30 
•271 
•002 
40 
T49 
•0035 
40 
•266 
•007 
50 
T43 
*0095 
50 
•256 
•017 
60 
T30 
•0225 
70 
•126 
•0265 
75 
T265 
•0260 
J 
0 to 
•296 
0 
d = Q 
20 
•296 
0 
£ = •063 
25 
*295 
•001 
K 
0 
•078 
0 
30 
•290 
•006 
d= 5 
10 
•078 
0 
35 
•286 
*010 
£=•0645 
20 
•078 
0 
40 
•271 
•025 
30 
•0778 
•0002 
45 
•257 
•039 
40 
•077 
•001 
50 
•076 
•002 
60 
•075 
•003 
L 
0 to 
•3093 
0 
70 
•0743 
•0037 
d = 4 
45 
•3093 
0 
80 
•072 
•006 
£ = •067 
55 
•3088 
•0005 
90 
•070 
•008 
60 
*3085 
•0008 
70 
•308 
•0013 
100 
•307 
•0023 
120 
*304 
•0053 
[Table IV. 
